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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [IVB/HSW/BYT bisected]Character render error when runing Steam-Half-Life2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76816">76816</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>idr@freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[IVB/HSW/BYT bisected]Character render error when runing Steam-Half-Life2
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jianx.zhou@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>git
</td>
</tr>
<tr>
<th>Component</th>
<td>Drivers/DRI/i965
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr></table>
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<pre>Platform: IVB/HSW/BYT
Libdrm:(master)libdrm-2.4.52-10-g1cb5fc706cf5913d9dee33c939f65a23ecea17a5
Mesa:(master)7683fce8781ef0169333c5ee1276392d058cfaa8
Xserver:(master)xorg-server-1.15.99.901-129-gbf087659f0fb747c471e26c5b287c35877818040
Xf86_video_intel:(master)2.99.911-3-g220accd828c5a0054ae9e3b491a434f7a6c750e0
Cairo:(master)bb17403622e9ea474017e0039af8ee48b2b285db
Libva:(staging)bf2e1773d4373619232c4c653b8cda19ea329441
Libva_intel_driver:(staging)b1319c7f7cb9d20179b20dac2308330bd0e51ffe
Kernel:(drm-intel-nightly)git-842955
Bug detailed description:
----------------------------------------------
Character Render error when runing Steam-half Life2 on IVB/HSW/BYT. The problem
exists on gnome-session and Raw X. It’s Mesa regression. Please see
steam-hl2.png.
By bisected show the first bad commit is :
commit 9cd51bb0c4608258199c69bc7738e72f055799d2
Author: Matt Turner <<a href="mailto:mattst88@gmail.com">mattst88@gmail.com</a>>
Date: Tue Mar 11 13:16:37 2014 -0700
i965/vec4: Eliminate writes that are never read.
Reproduce steps:
---------------------------------------------
1, xinit
2, export
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/lib64:/lib32:/lib/:/root/.steam/ubuntu12_32:/root/.steam/ubuntu12_32/steam-runtime/i386/lib:/root/.steam/ubuntu12_32/steam-runtime/i386/lib/i386-linux-gnu:/root/.steam/ubuntu12_32/steam-runtime/i386/usr/lib:/root/.steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu:/root/.steam/ubuntu12_32/steam-runtime/amd64/lib:/root/.steam/ubuntu12_32/steam-runtime/amd64/lib/x86_64-linux-gnu:/root/.steam/ubuntu12_32/steam-runtime/amd64/usr/lib:/root/.steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu:/root/.steam/ubuntu12_64:bin
3, vblank_mode=0 ./hl2.sh -game hl2 +cl_showfps 1 -novid +timedemo hl2
+demo_quitafterplayback 1 -full -w 1920 -h 1080</pre>
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